Hey, welcome!
I agree about the lack of WR primes! Many of us wish the FA limiteds would get an overhaul - adding WR and QS would make them killer lenses! Right now, I think the only WR primes are the DA* 55mm and DFA 100mm WR macro (both great lenses). Edit: Oh, sorry. Also the DA* 200mm, DA* 300mm, and DA 560mm, but these are not everyday lenses for most of us.
Originally posted by misomosi Sony seems attractive because it's full frame and cheap for that matter.
True, but it has many drawbacks. Really loud shutter slap, not really a DSLR, lens lineup, ergonomics and menu layout.. But yes, when it comes to sensors in affordable boxes, Sony is right there. I wish Pentax would make a good deal with Sony to get those sensors, and then put them into good Pentax bodies! WR, green button, good ergonomics. Pentax squeezed so much from that 16MP sensor, made better cameras than the other brands, including sony, using that same sensor.
Originally posted by misomosi Fuji seems even more attractive because of size, impressively fast and qualitative lenses
Fuji is quite good lately, but it is not really affordable. And the lens lineup is relatively small. Some real gems there, though. Also, I remember them having some sensor issues?
Not to say that Pentax is great and all others are bad. But Pentax brings a lot to the table for a good price. I found more cons than pros with the other brands, at least for my priorities. I know a couple Pentaxians here have two systems, like a Sony A7 with K-mount adapter, or a big Nikon beast and a compact Pentax DSLR for the times when they dont want to lug it around.